What does white waist bird look at age

White waist birds want to look at their age, and they need to observe the color and skin of feathers. Generally, the feathers of young birds are more shiny and the skin of the legs is very tender.The color of the old bird's feathers will be dim and messy. This is the structure of the wind and sun exposure. The skin on the legs is very thick, and the back scales are the same as the stratum corneum.It is best to choose this kind of bird to choose a little smaller, so that it is better to feed and live for a long time.